Mexican musician Julieta Venegas performs during a music festival in support of the student movement #YoSoy132, or "I am 132" in Mexico City, Saturday June 16, 2012. #YoSoy132 is the name of a university movement that rejects the possible return of the old ruling Institutional Revolutionary Party (PRI) ahead of Mexico's July 1 presidential election. (AP Photo/Marco Ugarte) (AP) less

Mexican musician Julieta Venegas performs during a music festival in support of the student movement #YoSoy132, or "I am 132" in Mexico City, Saturday June 16, 2012. #YoSoy132 is the name of a university ... more

Mexican multimedia artist Natalia Lafourcade performs during a music festival in support of the student movement #YoSoy132, or "I am 132" in Mexico City, Saturday June 16, 2012. #YoSoy132 is the name of a university movement that rejects the possible return of the old ruling Institutional Revolutionary Party (PRI) ahead of Mexico's July 1 presidential election. (AP Photo/Marco Ugarte) (AP) less

Mexican multimedia artist Natalia Lafourcade performs during a music festival in support of the student movement #YoSoy132, or "I am 132" in Mexico City, Saturday June 16, 2012. #YoSoy132 is the name of a ... more

In this image provided by Mexico's Federal Electoral Institute, IFE, the presidential candidates participate in Mexico's second and last presidential debate in Guadalajara, Mexico, Sunday June 10, 2012. From left are Andres Manuel Lopez Obrador, presidential candidate for the Democratic Revolution Party (PRD), Gabriel Quadri, Presidential candidate for the New Alliance party (PANAL), Enrique Pena Nieto, presidential candidate for the Revolutionary Institutional Party (PRI) and Josefina Vazquez Mota, presidential candidate for the National Action Party. (AP Photo/Federal Electoral Institute) (AP) less

In this image provided by Mexico's Federal Electoral Institute, IFE, the presidential candidates participate in Mexico's second and last presidential debate in Guadalajara, Mexico, Sunday June 10, 2012. From ... more

In this image provided by Mexico's Federal Electoral... Photo-3084624.44704 - San Antonio Express-News

Image 4 of 29

People gather to watch a broadcast of the second presidential debate on screens at Mexico City's Zocalo plaza, Sunday, June 10, 2012. Mexico will hold presidential elections on July 1. Presidential candidate Andres Manuel Lopez Obrador of the Revolutionary Democratic Party (PRD) is displayed on screen. (AP Photo/Marco Ugarte) (AP) less

People gather to watch a broadcast of the second presidential debate on screens at Mexico City's Zocalo plaza, Sunday, June 10, 2012. Mexico will hold presidential elections on July 1. Presidential candidate ... more

People gather to watch a broadcast of the second presidential... Photo-3084625.44704 - San Antonio Express-News

Image 5 of 29

Taboola Gallery Frame Item-85307.44704 - San Antonio Express-News

Image 6 of 29

National Action Party (PAN) candidate Josefina Vazquez Mota belongs to the same party as Felipe Calderon.
(AP)

National Action Party (PAN) candidate Josefina Vazquez Mota belongs to the same party as Felipe Calderon.
(AP)

Presidential candidate Josefina Vazquez Mota of the National Action Party (PAN), center, pauses during a news conference at her campaign headquarters in Mexico City, Wednesday, June 6, 2012. At left is her campaign manager Roberto Gil Zuarth and at right is her new spokesman Juan Ignacio Zavala. Next July 1, Mexico will hold presidential elections. (AP Photo/Dario Lopez-Mills) (AP) less

Presidential candidate Josefina Vazquez Mota of the National Action Party (PAN), center, pauses during a news conference at her campaign headquarters in Mexico City, Wednesday, June 6, 2012. At left is her ... more

Josefina Vazquez Mota, left, presidential candidate for the now-governing National Action Party, PAN, and Mexican poet Javier Sicilia, leader of the Movement for Peace with Justice and Dignity, embrace during a meeting between family members of victims of drug gang-related violence at Chapultepec Castle in Mexico City, Monday, May 28, 2012. Vazquez Moto was the first of the four presidential candidates scheduled to meet with Sicilia and representatives of his movement Monday. Mexico will hold presidential elections on July 1. (AP Photo/Eduardo Verdugo) (AP) less

Josefina Vazquez Mota, left, presidential candidate for the now-governing National Action Party, PAN, and Mexican poet Javier Sicilia, leader of the Movement for Peace with Justice and Dignity, embrace during a ... more

Josefina Vazquez Mota, left, presidential candidate for the now-governing National Action Party, PAN, and Mexican poet Javier Sicilia, leader of the Movement for Peace with Justice and Dignity, embrace during a meeting between family members of victims of drug gang-related violence at Chapultepec Castle in Mexico City, Monday, May 28, 2012. Vazquez Moto was the first of the four presidential candidates scheduled to meet with Sicilia and representatives of his movement Monday. Mexico will hold presidential elections on July 1. (AP Photo/Eduardo Verdugo) (AP) less

Josefina Vazquez Mota, left, presidential candidate for the now-governing National Action Party, PAN, and Mexican poet Javier Sicilia, leader of the Movement for Peace with Justice and Dignity, embrace during a ... more

Enrique Pena Nieto, presidential candidate for the Institutional Revolutionary Party, PRI, left, is greeted by Mexican poet Javier Sicilia, leader of the Movement for Peace with Justice and Dignity, upon his arrival to a meeting with Sicilia and family members of victims of drug gang-related violence at Chapultepec Castle in Mexico City, Monday, May 28, 2012. Pena Nieto was the second of the four presidential candidates to meet with Sicilia and representatives of his movement Monday. Mexico will hold presidential elections on July 1. (AP Photo/Eduardo Verdugo) (AP) less

Enrique Pena Nieto, presidential candidate for the Institutional Revolutionary Party, PRI, left, is greeted by Mexican poet Javier Sicilia, leader of the Movement for Peace with Justice and Dignity, upon his ... more

Mexican presidential candidate Enrique Pena Nieto of the Revolutionary Institutional Party (PRI), second from left, gestures to supporters while standing with unidentified Baja California state party members during a campaign stop in the northern border city of Tijuana, Mexico, Sunday, June 3, 2012. On July 1, Mexico will hold presidential elections. (AP Photo/Alex Cossio) (AP) less

Mexican presidential candidate Enrique Pena Nieto of the Revolutionary Institutional Party (PRI), second from left, gestures to supporters while standing with unidentified Baja California state party members ... more

Enrique Pena Nieto, presidential candidate for the Institutional Revolutionary Party, PRI, attends a meeting with Mexican poet Javier Sicilia, leader of the Movement for Peace with Justice and Dignity, and family members of victims of drug gang-related violence at Chapultepec Castle in Mexico City, Monday, May 28, 2012. Pena Nieto was the second of the four presidential candidates to meet with Sicilia and representatives of his movement Monday. Mexico will hold presidential elections on July 1. (AP Photo/Eduardo Verdugo) (AP) less

Enrique Pena Nieto, presidential candidate for the Institutional Revolutionary Party, PRI, attends a meeting with Mexican poet Javier Sicilia, leader of the Movement for Peace with Justice and Dignity, and ... more